pWaccamaw River floodwaters in Conway, South Carolina, dropped below 17.5 feet on Wednesday, October 3, as the state’s Department of Transportation worked to deconstruct a barrier built along US 501 before record flooding last week.ppSwollen by Hurricane Florence, the river crested at 21 feet a week ago, topping the 17.9 feet record set by Hurricane Matthew’s floodwaters in 2016. The river is expected to drop below major flood stagea by Monday.ppThe top video and the photos seen here were shot on Wednesday, October 3. The drone video was shot on Monday, October 1, as work began.